A lot of clients have recently received an email headed Domain Service/Domain Notification with what appears to be an invoice for the renewal of search engine registration services. This email includes an address in Torrance, CA, U.S.A.

This is a scam and should be deleted. If this service does actually exist, and we can't confirm this, then it is certainly not necessary for the normal operation of your website.

A sample of the email layout is included below.